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Statements

Subject Item
n2:RIV%2F46346741%3A_____%2F12%3ATEPOJ04%21RIV13-MPO-46346741
rdf:type
n12:Vysledek skos:Concept
dcterms:description
One of the most important challenges of present time concrete science is how to reduce Portland cement production and limit its use. One reason for this is a need for CO2 emission reduction and another a need for a saving of natural resources (limestone, energy). The present paper deals with some results achieved by a replacement of natural ground limestone with ground recycled concrete. Two different concretes were used as the source of concrete filler. Both of them were ground to three specific surfaces. A limestone of similar specific surfaces was used too. Mortars were mixed with a blend of Portland cement, fly ash and concrete filler or limestone filler. The compressive strengths at the age of 24 hours and 28 days are presented in the paper. The results prove that mortars with fly ash and concrete filler show a similar workability; worse early-age strengths and better 28-day strengths than those with fly ash and limestone. One of the most important challenges of present time concrete science is how to reduce Portland cement production and limit its use. One reason for this is a need for CO2 emission reduction and another a need for a saving of natural resources (limestone, energy). The present paper deals with some results achieved by a replacement of natural ground limestone with ground recycled concrete. Two different concretes were used as the source of concrete filler. Both of them were ground to three specific surfaces. A limestone of similar specific surfaces was used too. Mortars were mixed with a blend of Portland cement, fly ash and concrete filler or limestone filler. The compressive strengths at the age of 24 hours and 28 days are presented in the paper. The results prove that mortars with fly ash and concrete filler show a similar workability; worse early-age strengths and better 28-day strengths than those with fly ash and limestone.
dcterms:title
The use of concrete filler as mineral admixture in concrete The use of concrete filler as mineral admixture in concrete
skos:prefLabel
The use of concrete filler as mineral admixture in concrete The use of concrete filler as mineral admixture in concrete
skos:notation
RIV/46346741:_____/12:TEPOJ04!RIV13-MPO-46346741
n12:predkladatel
n13:ico%3A46346741
n4:aktivita
n16:P
n4:aktivity
P(FR-TI1/004)
n4:dodaniDat
n9:2013
n4:domaciTvurceVysledku
n10:5020476
n4:druhVysledku
n14:O
n4:duvernostUdaju
n8:S
n4:entitaPredkladatele
n11:predkladatel
n4:idSjednocenehoVysledku
176332
n4:idVysledku
RIV/46346741:_____/12:TEPOJ04
n4:jazykVysledku
n5:eng
n4:klicovaSlova
concrete filler; fly ash; synergy; limestone
n4:klicoveSlovo
n6:fly%20ash n6:concrete%20filler n6:limestone n6:synergy
n4:kontrolniKodProRIV
[A6B18174919A]
n4:obor
n15:JN
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
1
n4:projekt
n17:FR-TI1%2F004
n4:rokUplatneniVysledku
n9:2012
n4:tvurceVysledku
Bílek, Vlastimil